NOUN
1A mark (¨) placed over a vowel to indicate that it is sounded separately, as in naïve, Brontë.
- 1.1mass noun The division of a sound into two syllables, especially by sounding a diphthong as two vowels.
2Prosody
A natural rhythmic break in a line of verse where the end of a metrical foot coincides with the end of a phrase.
Origin
Late 16th century (denoting the division of one syllable into two): via Latin from Greek diairesis ‘separation’, from diairein ‘take apart’, from dia ‘apart’ + hairein ‘take’.
Trump says that he’s signed an order to close the U.S. border with Mexico, adding that he’s authorized troops to use lethal force against migrants who attempt to enter the U.S.
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Deadly force, also known as lethal force, is use of force that is likely to cause serious bodily injury or death to another person. In most jurisdictions, the use of deadly force is justified only under conditions of extreme necessity as a last resort, when all lesser means have failed or cannot reasonably be employed.
Deadly force - Wikipedia
https://en.wikipedia.org/wiki/Deadly_force